Liver Blood supply:—
The liver derives blood from the hepatic artery (20%)  and the portal vein (80%).
The hepatic artery usually arises from the aorta at the coeliac axis and divides into the right and left branches at the hilus.
— —The venous drainage from the liver is by three large hepatic veins  right, middle and left  into the inferior vena cava (IVC), …

These are typical reference ranges, although various analysers and laboratories may employ different ranges.
Online Interpreter ABG : http://manuelsweb.com/abg.htm

Analyte
Range
Interpretation

pH
7.35-7.45
The pH or H+ indicates if a patient is acidotic (pH < 7.35; H+ >45) or alkalemic (pH > 7.45; H+ < 35).

H+
35-45 nmol/l(nM)
See above.

PaO2
9.3-13.3kPa or 80-100mmHg
A low O2 indicates that the patient is not respiring properly, and is hypoxemic. At a PaO2 of …

Estimated values
A number of formulae have been devised to estimate GFR or Ccr values on the basis of serum creatinine levels.

Estimated creatinine clearance rate (eCCr) using Cockcroft-Gault formula
A commonly used surrogate marker for estimate of creatinine clearance is the Cockcroft-Gault formula, which in turn estimates GFR: It is named after the scientists who first published the formula, and it …

Indications for diagnostic paracentesis:

Cirrhotic patients with ascites at admission
Cirrhotic patients with …

CHRONIC OBSTRUCTIVE PULMONARY DISEASE
Definition
Group of heterogeneous conditions embracing chronic bronchitis, chronic bronchiolitis (small airway disease) and emphysema characterized by air flow limitation that is not fully reversible.Emphysema is defined as enlargement of the distal airways with destruction of acinus , without associated fibrosis.Chronic bronchitis is defined clinically as cough, productive of at least 2 tablespoons of sputum on most days …